Optical card
First Claim
1. An optical card comprising:
- a card substrate having a first and a second side which are parallel to each other, said card substrate having its rigidity which is sufficient to handle said card substrate independently, said first side of said card substrate serving as a reading side upon which reading light is incident;
an optical-data recording section including a light-reflective pattern, said optical-data recording section being arranged on said second side of said card substrate, in which optical data incident upon said optical-data recording section toward said reading side of said card substrate is recorded by said optical-data recording section, the optical data recorded on he optical card being read by detecting the light reflected from the light-reflective pattern; and
a shielding layer is arranged on said fist side of said card substrate, for shielding said optical-data recording section from a viewer'"'"'s field of view, said shielding layer being substantially black in color and having its transmission characteristic with respect to said reading light, which is sufficient to shield light within a visual range and to enable reading of said optical-data recording section whereby a sensor for reading the light reflective patterns adapted to be positioned at the reading side upon which reading light is incident for reading.
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Accused Products
Abstract
In an optical card, a card substrate has its rigidity which is sufficient to handle the card substrate independently. The card substrate has a first side which serves as a reading side upon which reading light is incident. An optical-data recording section includes a light-reflective pattern. The optical-data recording section is arranged on one of the first and second sides of the card substrate. Optical data incident upon the optical-data recording section toward the reading side of the card substrate is recorded by the optical-data recording section. A shielding layer is arranged on one of the first and second sides of the card substrate, for shielding the optical-data recording section from a viewer'"'"'s field of view. The shielding layer has its transmission characteristic with respect to the reading light, which is sufficient to shield light within a visual range and to enable reading of the optical-data recording section.
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Citations
9 Claims
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1. An optical card comprising:
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a card substrate having a first and a second side which are parallel to each other, said card substrate having its rigidity which is sufficient to handle said card substrate independently, said first side of said card substrate serving as a reading side upon which reading light is incident; an optical-data recording section including a light-reflective pattern, said optical-data recording section being arranged on said second side of said card substrate, in which optical data incident upon said optical-data recording section toward said reading side of said card substrate is recorded by said optical-data recording section, the optical data recorded on he optical card being read by detecting the light reflected from the light-reflective pattern; and a shielding layer is arranged on said fist side of said card substrate, for shielding said optical-data recording section from a viewer'"'"'s field of view, said shielding layer being substantially black in color and having its transmission characteristic with respect to said reading light, which is sufficient to shield light within a visual range and to enable reading of said optical-data recording section whereby a sensor for reading the light reflective patterns adapted to be positioned at the reading side upon which reading light is incident for reading. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification